Engineer&#39;s valve.



4 PATENTED Nov. 6, 1906.

W. K. RANKIN. ENGINEBRS VALVE.

APPLICATION FILED JAN.30, 1906.

Invcntof. MlliamKRankin Win65.

miiilllllll) 'i'hltl m S if:

EIlATiENT @FFICE.

WILLIAIVE K. RAN KIN, OF PHlLADELPHiA, iEZiNSYLVAli'lA, ASSlGNillP. TO

(ll? L-i-ZILALL'ELPHIA, PENNSYLVANEA,

JOHN E. REYBURN,

no. assess.

Specification of Letters Patent.

Patented Nov. 6, 1906 Application filed January 36, 1906. Serial l lo.293E593,

To all whom it may con/(fewer Be it known that I, Wnmrmr K. ll ANKIN, acitizen of the United States residing at Philadelphia, in thecouuty oVhiladelphis and State of Pennsylvania, have invented certain new anduseful improvements in Engineers Valves, of which the following is esoecificstion.

This invention relates to means for the control of air-brakes;especially for electrically-driven cars.

The objects sought to be accomplished are double valves, which will benon-leekeble, to maintain in good workehle condition on account of themovable parts being simple in construction, easily removable forinspection, repairs, and renewals, zine. sensitive in applying andreleasing the air-pi sure by the employment of separate valves for theapplication and release of the pressure.

'The invention is illustrated in the accompenying (lswings, in whichsimilar figures of reference indicate similar parts throughout theviews, and in which- Figure 1 is a section on line X X, Fig. 2. 2 issection on line V V, Big. 1, some parts not being in section. 8 is aView of the front of the case.

In case 1 there is en edmissionwslve 2, horizontally-disposed, wish ahorizontallydisposed chamber 3, into which leads a port 4: from ti pipe5 which is in communication with the sir-reservoir. (Not shown.) Thevalve has stem 6 at its back fe.ce,which is guided in a cap-nut 7,screwed into case i,

' and a stem 8 at its inner face, which s flange 9 abutting a'fiEXll'llS diaphragm 10, preferably of rubber, secured e1r-t1ght to thecase 1 by e flange-nut l1, screwed into the case 1. In alinoment withstem 8 is a stem 3.2, guided in nut 11 and having a flange 13 againstdiaphragm l0 opposite flange 9. Between alve 2 and diaphragm thereis ehorizontally-disposed chamber 14, with a port 15 leading therefrom. Aspring 16 is placed over stem 6 between valve 2 end can nut 7 In thecase 1 oppositely to valve 2 there an exhaust-valve '17, with ahorizontally-(lisposed chamber 18 in communication with port 15 fromchamber 14. The valve has a stem 19, guided in cap-nut 20, with a spring1 over the stern and between the valve and nut. From chamber 18 a port22 leads to pipe 2? in communication with the j amecyhnclers of thebrake. Valve 1'7 has inner stem 24, guided by e flange-nut- 25, screwedto 1. Between Valve 17 and nut 25 there is a horizontnily-disposedexhaustchmnber 26, having a port 27 leading into the muffler 28, formedin case 1 opposite the valves and having multiple apertures 29 throughwhich the exhaust inaudibly escapes;

The case 1 is represented. as being secured to the cer-clesher 30,which. forms e side of the muffler, by bolts 31; but it may be en portedby its pipes 5 23, independent of tie dasher 30, in. which case bolts 31will secure a back plate instead of the clesher. Above rnuliier' 28there is secured av flange 32, with a hub 33 for the shaft 34; of theoperative hentile 35, the handle being secured to the shaft for easyremoval when the brake is not in use. Shaft 34 is stepped in thernufiler 28 of case 1 at 36 opposite stem 12. Shaft 234i has aprojecting arm 37, and opposite stem 24 it has another projecting arm38. Stem. 12 has a ren'iovablc flange 39, and stem 24 has e removableileuge 40; both circular in form against which mine 36 37 abut, only sslight inov *nent ofhenclle being necessary to te the valves, owing tothe proxiniity of of flanges 39 40 to the. heft When. air is to beadmitted to the jam cylinders, the handle 35 will be moved to press arm37 Against flange 39 of stern 12, which *ill open valve 2 and allow theair in the reservoir to pass through pipe 5, port 4, chamber 3, ports 15252, to ipe 23 and to the jem-cylir iers, and apply tie brake. 'When thehrehe is to be released, the handle 35 will be turned the reverse way,causing arm 38 to press against flange 40 of stem 24, when valve 17 willopen ccn'imunication between pipe 23, chambers 18 2'26, and port- 27 tomuffler 28. l' lhen botl'i valves 2 i? are to be closed and inoperative,handle 35 will either be removed or remein central.

The springs 16 21 the air-pressure in chamber against the heck of valve2 will cause the valves to be closed an cl inoperative nutonmtieeliywhen. handle 35 is removed, and shaft 34 being below or flush with thetop of hub 3-3 will prevent any operation of the valves exce 'it by theapplication of handle 35.

l claim-- 1. In an engineers valve, a case, an inletvalve, horizontallydisposed between two horizontal chambers at one side of the case,

one of said chambers being in. communica tion with an air-reservoir; anoutlet-valve also horizontally disposed between two horizontal chambersat the opposite side of the case and parallel to the inlet-valve and itschambers, one of said. chambers being in communication with a chamber ofthe inletvalve, and having connections to brake jamcylinders, and meansto operate the valves for the purposes set forth.

2. In anengi'neers valve, a case, a connection thereto from anair-reservoir, a connec= tion therefrom to brake jam-cylinders; a1

, horizontal chamber in. communication with the reservoir connection,ahorizontal 1nletvalve in the chamber, a stem from the valve andabutting a flexible diaphragm located in a chamber under the valve ahorizontal chamber in communication with the jam-cyl' inder connection,apassagetherehor'n to a chamber under the inlet-valve, an exhaustvalvein the j am cylinder chamber, a chamher under the valve, a mufflerhaving communication with the chamber under the valve, resilient meansfor closin the valves, a shaft having arms to move t e valves, a handleengaging the shaft so that, when turned in one direction one of thevalves is opened and the other remains closed, and V106 verse.

3. In aniengineers valve, a case, a hori z'ontal inlet-valve at one sideof the case and a horizontal outlet or release valve therein, at theopposite side of the case, in parallel alinement; a horizontal chamberlocated at each side'of each valve, a stem for each valve, an air-inletto one of the valves,-and an air-outlet from-the other valve, a assagefrom-the inlet to the outlet valve, a shaft having sepae rate arms tooperate the valves, and'a-hand'le to operate the shaft, and a' mufllerwherein the shaft is located.

In testimony whereof I ailixmy signature in presence of two witnesses.

WILLIAM K. RANKIN. Witnesses:

l/VILLIALLC. SToEvER, RANsOM' C. WRIGHT.

